Source for javax.management.StringValueExp

   1: /* StringValueExp.java -- Represents strings to be passed to queries.
   2:    Copyright (C) 2007 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: package javax.management;
  39: 
  40: /**
  41:  * Represents a string being used as an argument
  42:  * to a relational constraint.
  43:  *
  44:  * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
  45:  * @since 1.5
  46:  */
  47: public class StringValueExp
  48:   implements ValueExp
  49: {
  50: 
  51:   /**
  52:    * Compatible with JDK 1.5
  53:    */
  54:   private static final long serialVersionUID = -3256390509806284044L;
  55: 
  56:   /**
  57:    * The string value.
  58:    */
  59:   private String val;
  60: 
  61:   /**
  62:    * Constructs a new {@link StringValueExp}.
  63:    */
  64:   public StringValueExp()
  65:   {
  66:   }
  67: 
  68:   /**
  69:    * Constructs a new {@link StringValueExp} using the
  70:    * specified value.
  71:    *
  72:    * @param val the string value used for this expression.
  73:    */
  74:   public StringValueExp(String val)
  75:   {
  76:     this.val = val;
  77:   }
  78: 
  79:   /**
  80:    * Applies the {@link StringValueExp} to the specified
  81:    * management bean by simply returning the value.
  82:    *
  83:    * @param name the {@link ObjectName} of the bean.
  84:    * @return the {@link StringValueExp} itself.
  85:    * @throws BadStringOperationException if an invalid string
  86:    *                                     operation is used by
  87:    *                                     the value expression.
  88:    * @throws BadBinaryOpValueExpException if an invalid expression
  89:    *                                      is used by the value expression.
  90:    * @throws BadAttributeValueExpException if an invalid attribute
  91:    *                                       is used by the value expression.
  92:    * @throws InvalidApplicationException if the value expression is applied
  93:    *                                     to the wrong type of bean.
  94:    */
  95:   public ValueExp apply(ObjectName name)
  96:     throws BadStringOperationException, BadBinaryOpValueExpException,
  97:        BadAttributeValueExpException, InvalidApplicationException
  98:   {
  99:     return this;
 100:   }
 101: 
 102:   /**
 103:    * Returns the value.
 104:    *
 105:    * @return the value.
 106:    */
 107:   public String getValue()
 108:   {
 109:     return val;
 110:   }
 111: 
 112:   /**
 113:    * Sets the {@link MBeanServer} on which the query
 114:    * will be performed.
 115:    *
 116:    * @param server the new server.
 117:    */
 118:   public void setMBeanServer(MBeanServer server)
 119:   {
 120:     /* This seems to do nothing any more */
 121:   }
 122: 
 123:   /**
 124:    * Returns the value in quotes.
 125:    *
 126:    * @return the value (quoted).
 127:    */
 128:   public String toString()
 129:   {
 130:     return "'" + val + "'";
 131:   }
 132: 
 133: }